Self-sealing of Wellbore Cement under the CO2 Batch Experiment Using Well Composite Sample

Nakano, Kazuhiko; Mito, Saeko; Xue, Ziqiu

doi:10.1016/j.egypro.2017.03.1677

Cited by 14 publications

(7 citation statements)

References 12 publications

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“…Nakano et al evaluated the self-healing performance of cement in wellbores. The reaction between CO 2 and Portland cement was conducted through a CO 2 batch experiment.…”

Section: Sealant Materials For Co2 Leakage Controlmentioning

confidence: 99%

Section: Sealant Materials For Co2 Leakage Controlmentioning

confidence: 99%

“…100,131−135 Abid et al 101 introduced nansilica to cement samples to improve the performance of cement against CO 2 attack. Nakano et al 136 evaluated the self-healing performance of cement in wellbores. The reaction between CO 2 and Portland cement was conducted through a CO 2 batch experiment.…”

Section: Development Of Portland Cementmentioning

confidence: 99%

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Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

et al. 2021

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Carbon capture and storage (CCS) technology has been widely investigated to decrease the greenhouse effect. Geological CO2 storage sites are targeted mainly on depleted petroleum reservoirs or deep saline aquifers. However, CO2 leakage might take place through wellbores, cap rocks, reservoir fractures, or faults during or after the process of CO2 storage leading to environmental problems. To minimize these hazards, different kinds of sealants have been developed and applied. This review aims to summarize those materials applicable to CO2 leakage remediation. On the basis of the sealing mechanisms and compositions of different sealant materials, they were divided into seven major types: Portland cement, geopolymer cement, resins, biofilms barriers, gel systems, foams, and nanoparticles. For different types of sealants, their application background, chemical and physical properties, CO2 leakage remediation mechanism, impact factors of sealing performance, advantages, and limitations were summarized. Future development directions for these sealant materials are also recommended. To solve the problem caused by the weak acid-resistant performance of Portland cement, anti-CO2 materials should be developed and added to the formulation. Environmentally friendly materials need to be designed to replace some current user-hostile compositions in the geopolymer cement. Moreover, chemicals that can control the geopolymerization process are also required because of the high curing temperature requirement for the recent geopolymer productions. The injectivity of Portland cement and resin limits its application for in-depth CO2 leakage control; however, gels with relatively low viscosity during the injection can be a good alternative, although their thermal stability and strength need to be further enhanced. Biotechnology and nanotechnology are perspectives to be applied in the CO2 leakage control process. Foams with good stability might be used for CO2 leakage remediation in the porous medium without fractures, but their life cycle should be prolonged.

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“…Nakano et al evaluated the self-healing performance of cement in wellbores. The reaction between CO 2 and Portland cement was conducted through a CO 2 batch experiment.…”

Section: Sealant Materials For Co2 Leakage Controlmentioning

confidence: 99%

Section: Sealant Materials For Co2 Leakage Controlmentioning

confidence: 99%

See 1 more Smart Citation

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

et al. 2021

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“…For low residence time range, leached minerals will be depleted from the fracture without having sufficient time to deposit at downstream locations, therefore the fracture aperture starts to increase. Despite statements in [8,48,66] disclosing the residence time threshold as a criterion to separate self-healing from fracture opening behaviour, many studies indicated that self-healing behaviour is more likely to occur at normal conditions of underground carbon storage [13,14,29,47,48,64,69,[72][73][74].…”

Section: Effect Of Residence Timementioning

confidence: 99%

A review of oil well cement alteration in CO2-rich environments

Bagheri

Shariatipour

Ganjian

2018

Construction and Building Materials

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“…After carbonation of wellbore cement, four areas can be formed on its surface [15]: a dissolution front, a carbonated zone, a portlandite-depleted zone, and an unreacted zone. If the amount of precipitation in the calcium carbonate sedimentary area is sufficient, the sediment can hinder the further corrosion of CO 2 and block the potential leakage channel [16][17][18], thus preventing the CO 2 from moving upward. The resulting calcium carbonate precipitation that can block the leakage channel depends on the aperture size of the leaking channel and the length of time the CO 2 stays in the crack channel.…”

Section: Introductionmentioning

confidence: 99%

Micro-CT Characterization of Wellbore Cement Degradation in SO₄^2-–Bearing Brine under Geological CO₂ Storage Environment

et al. 2019

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In order to explore the process of acid- and CO2-induced degradation of wellbore cement and the development of pre-existing leakage channels in wellbore cement under sulfate-rich geological CO2 storage conditions, wellbore cement samples were immersed in SO42--bearing brine solution for 7 days, and the samples after reacting with the low and circumneutral pH solutions were scanned by a micro-CT scanner. HCl+Na2SO4 solution was used to simulate the low-pH condition in deep formation waters and the possible existence of high sulfate ion content in deep formation waters. The acidification and carbonation results were compared, and the results given different pH values and different curing conditions were compared as well. The results show that the degradation of cement was related to the pH value of the reaction solution. There was a significant dissolution in the exterior of the cement sample after exposure to the low-pH solution, but the dissolution surrounding a penetrating borehole at the center of the sample (mimicking a leakage pathway within the wellbore cement in geological CO2 storage environment) was limited. Comparison between acidification and carbonation results in this study shows formation of a thick carbonate layer due to cement carbonation, and this layer was not observed in the acidification result. As for different curing conditions of cement samples, no significant difference in cement alteration depth was observed for the acidification case. For the carbonation case, precipitations in the borehole occurred in the cement sample cured at ambient pressure, while the cement sample cured at high pressure did not produce any precipitation in the borehole. This study provides valuable information on how low pH-induced corrosion and HCO3--induced cement carbonation contribute to structure evolution of wellbore cement in SO42--bearing brine under geological CO2 storage environment.

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Self-sealing of Wellbore Cement under the CO2 Batch Experiment Using Well Composite Sample

Cited by 14 publications

References 12 publications

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

A review of oil well cement alteration in CO2-rich environments

Micro-CT Characterization of Wellbore Cement Degradation in SO₄^2-–Bearing Brine under Geological CO₂ Storage Environment

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Self-sealing of Wellbore Cement under the CO2 Batch Experiment Using Well Composite Sample

Cited by 14 publications

References 12 publications

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO2 Capture and Storage Process

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO2 Capture and Storage Process

A review of oil well cement alteration in CO2-rich environments

Micro-CT Characterization of Wellbore Cement Degradation in SO42-–Bearing Brine under Geological CO2 Storage Environment

Contact Info

Product

Resources

About

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

Comprehensive Review of Sealant Materials for Leakage Remediation Technology in Geological CO₂ Capture and Storage Process

Micro-CT Characterization of Wellbore Cement Degradation in SO₄^2-–Bearing Brine under Geological CO₂ Storage Environment